@incollection{SchemmLintzelBorchert2005,
  author    = {Schemm, R. and Lintzel, P. and Borchert, J{\"o}rg},
  title     = {Typische Elemente des Handelsmarktes},
  series = {Energiehandel in Europa},
  booktitle = {Energiehandel in Europa},
  editor    = {Zenke, Ines},
  publisher = {Beck},
  address   = {M{\"u}nchen},
  isbn      = {3-406-52443-5},
  pages     = {195 -- 216},
  year      = {2005},
  language  = {de}
}
@incollection{BorchertSchemmLintzel2005,
  author    = {Borchert, J{\"o}rg and Schemm, R. and Lintzel, P.},
  title     = {Risiken des Handelsgesch{\"a}ftes},
  series = {Energiehandel in Europa},
  booktitle = {Energiehandel in Europa},
  editor    = {Zenke, Ines},
  publisher = {Beck},
  address   = {M{\"u}nchen},
  isbn      = {3-406-52443-5},
  pages     = {218 -- 235},
  year      = {2005},
  language  = {de}
}
@article{BorchertSchemm2007,
  author    = {Borchert, J{\"o}rg and Schemm, R.},
  title     = {Einsatz der Portfoliotheorie im Asset Allokations-Prozess am Beispiel eines fiktiven Anlageraumes von Windkraftstandorten},
  series = {Zeitschrift f{\"u}r Energiewirtschaft},
  volume    = {31},
  journal   = {Zeitschrift f{\"u}r Energiewirtschaft},
  number    = {4},
  issn      = {0343-5377},
  pages     = {311},
  year      = {2007},
  language  = {de}
}